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![Disassembly AND/OR diagram of ball-pen [23]. | Download Scientific ...](https://www.researchgate.net/publication/262844435/figure/fig2/AS:323162895077376@1454059446031/Disassembly-AND-OR-diagram-of-ball-pen-23.png "Disassembly AND/OR diagram of ball-pen [23]. | Download Scientific ...")